package cn.edu.ctbu.handle;


import cn.edu.ctbu.exception.BaseException;
import cn.edu.ctbu.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 捕获业务异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(BaseException ex){
            log.error("异常信息：{}", ex.getMessage());
            return Result.error(ex.getMessage());

    }

    /**
     * 处理sql异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(SQLIntegrityConstraintViolationException ex){
        //Duplicate entry '刘静' for key 'employee.idx_username'
        String msg=ex.getMessage();
        if(msg.contains("Duplicate entry")){
            String[] split=msg.split(" ");
            String username=split[2];
            String mess=username+ "已存在";
            log.info(mess);
            return Result.error(mess);
        }else{
            return Result.error("未知错误");
        }

    }

}
